Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) — Last updated October 8, 2026
Medigap Plan F covers every gap in Original Medicare, including the Part B deductible, but only people who were eligible for Medicare before January 1, 2020, can buy it. High-Deductible Plan F has a $3,050 deductible for 2027.
Plan F was the most popular Medigap plan for years. A 2015 federal law stopped Medigap plans from covering the Part B deductible for people newly eligible from 2020 on, which closed Plans C and F to new enrollees. People already in Plan F can keep it, and people who were eligible before 2020 can still buy it.
This guide explains who can buy Plan F, what it covers, how it compares with Plan G and whether to switch. See Medicare Plan G and Medicare Supplement plans 2027.
✔ Based on CMS 2027 data
✔ Free plan comparison



